Professor Szabo has contributed to the fundamental understanding and design of surface acoustic wave signal processing devices, to novel means of transduction and measurement for nondestructive evaluation using ultrasound, to seismic signal processing applied to acoustic imaging, and to the research and development of state-of-the-art diagnostic ultrasound imaging systems. He has published over seventy papers in these areas. His current interests in ultrasound are overcoming present limitations in imaging the body and finding new ways of extracting noninvasively diagnostically useful information about tissue structure, health and function. His research includes the following methods: digital beamforming, signal processing, miniature transducer arrays, nonlinear acoustic propagation, ultrasound-induced bioeffects, broadband measurement techniques, simulation and measurement of wave propagation in inhomogeneous media and scanning acoustic microscopy. Dr. Szabo is a Fellow of the Acoustical Society of America and of the American Institute of Ultrasound in Medicine, a Senior Life Member of the IEEE, a convenor and U. S. delegate to the International Electrotechnical Commission, and a winner of a best paper award in the IEEE UFFC/SU Transactions.